Differences Between 316, 316L and 316H Stainless Steel for Foreign Trade

Q1: What is the core difference between 316, 316L and 316H stainless steel? A1: The core difference is carbon content: 316 (≤0.08%), 316L (≤0.03%, low carbon), 316H (high carbon), which leads to differences in their high-temperature performance and welding performance.

Q2: In which scenarios is 316L stainless steel suitable for foreign trade orders? A2: It is suitable for thick-section welding parts (above 5mm) and scenarios requiring avoidance of intergranular corrosion, such as chemical pipelines and marine engineering equipment.

Q3: What are the characteristics of 316H stainless steel? A3: 316H has high carbon content, higher strength at high temperatures (above 500℃), and is suitable for high-temperature pressure-bearing applications such as high-temperature boilers.

Q4: Which of the three has better corrosion resistance? A4: The corrosion resistance of 316 and 316L is basically the same, while 316H is slightly lower due to higher carbon content; 316L is more resistant to intergranular corrosion after welding.

Q5: How to recommend these three derivatives to overseas customers? A5: Recommend 316 for general corrosion-resistant scenarios, 316L for welding-heavy projects, and 316H for high-temperature pressure-bearing equipment according to the customer's application temperature and welding requirements.